Referência documental:
SAA, Stadsarchief Amsterdam, NA 556B/159, Nots: J. Westfrisius. Contract (Power of Attorney, Bill of Exchange) of Adam Jansen de Bruijn, Ernst Wesselingh, Jacob de la Faia, Daniel de Haen, Nicolaes de Haen, Isac Zacuto, Reinier Soreau.